Embed Size (px)
Citation preview
Environmental risks? Beneficial reuse?
Environmental risks assessments of flame-retardant found in EPS bridge embankments
Arnt Olav Håøya, Ecoloop AS
7. June 2011
EPS 2011 - Oslo, Norway
1
Authors and contributors
Ecoloop
• Arnt-Olav Håøya (No)
Rambøll
• Kim Haagensen (Dk)
Norwegian Public Roads
• Roald Aabøe (NPRA)
• Helge Johansen (NPRA)
• Magne Lerfaldet (NPR-RE)
Norwegian Industry (EPS group)
Environmental risks? Beneficial reuse?
1) Goal and general message
2) The “Østfold bridges” case (2006/2011)
• Introduction
• Materials and methods
• Results
• Conclusions
3) Beneficial reuse of EPS
• Technical/environmental/chemical/regulatory
• Overall conclusions
7. June 2011
EPS 2011 - Oslo, Norway
3
Goal and general message
•006-7 and 2011: Compare technical guidance values for two brominated flame retardants (BRF) found in the soil. Does the BRFs represent an environmental risk?
•resent general changes in Waste Framework Directive (WFD) and beneficial reuse of EPS.
7. June 2011
EPS 2011 - Oslo, Norway
4
The “Østfold bridges” case: Introduction – Materials and methods
•ackground
•echnical testing
•oil sampling/analysis
•uidance values
7. June 2011
EPS 2011 - Oslo, Norway
5
The “Østfold bridges” case: Results
7. June 2011
EPS 2011 - Oslo, Norway
6
The “Østfold bridges” case: ENVIRONMENTAL RISKS?
•ite specific risk assessment
•nvironmental risks?
7. June 2011
EPS 2011 - Oslo, Norway
7
Mg/kg DW µg/ltr
The “Østfold bridges” case: Conclusions
•
he content of HBCDD in the EPS blocks was high and at a level comparable to the
expected content based on production information /1/.
•
he content of HBCDD in soil below the EPS blocks was below the limit of detection (0.2
mg/kg DM), which also is the level of the guidance value from 2006 and more than 10
times less than EU PNEC value form 2008.
•
he risk of exposure for humans and the environment to HBCDD is low when the EPS
are used for building, in the road and when being demolished. At the end of life EPS is
handled as a hazardous waste according to national regulations.
•
BDEs have not been detected in the EPS-blocks, only in the upper soil samples.
•
he content of penta-BDE in soil samples was below 0.1 mg/kg DM, which is more than
3 times lower than the guidance value. This concentration level is less than predicted
environmental regional agricultural soil concentration /16/. Specific sources are not
located.
7. June 2011
EPS 2011 - Oslo, Norway
8
Beneficial reuse
•aste framework directive
• 1 Prevent – 2 Reuse
• 3 Recycle – 4 Recover
• 5 Dispose
•ocumentation
• LCA/LCC
• Environmental properties
• Technical properties
7. June 2011
EPS 2011 - Oslo, Norway
9
Overall conclusion
•eneficial reuse of EPS
• Technical test standard
• Environmental test standard
•nd of life
• Recycle raw material
• Recover energy
• (Landfill)
•hink right
7. June 2011
EPS 2011 - Oslo, Norway
10
